Mary E. Holliday, NP
NPI 1780775239ActiveIndividual· Nurse Practitioner· Charleston, SC
Nurse Practitioner (NP) with Roper Saint Francis Physicians Network, practicing in Charleston, South Carolina. Their prescriptions cost Medicare Part D more than their services did: $586,596 for 1,395 claims, against $57,049 paid for services in 2024. Abbott Laboratories was the largest of 14 companies reporting payments in 2025, $968.29 in all, mostly food and beverage. Lists Bon Secours-St Francis Xavier Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1780775239 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Sep 28, 2006 |
| Last updated in NPPES | Apr 28, 2026 |
| Certified by provider | Apr 28, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 19679 | SC |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 289 |
|---|---|
| Services billed | 1,075 across 13 procedure codes |
| Paid by Medicare | $57,049 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,395 · 2,940 30-day fills |
|---|---|
| Patients | 166 |
| Total drug cost | $586,596 |
| Generic share | 30% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Roper Saint Francis Physicians NetworkN Charleston, SC · 528 clinicians
Hospital affiliations
- Bon Secours-St Francis Xavier HospitalCharleston, SC
- Roper HospitalCharleston, SC
- Roper St Francis Hospital-Berkeley IncSummerville, SC
Industry payments (Open Payments)
- 2025$968.29 · 32 payments from 14 companies
- 2024$679.88 · 28 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $219.60 | 5 |
| Insulet Corporation | $167.79 | 6 |
| Tandem Diabetes Care, Inc. | $115.99 | 1 |
| Abbvie Inc. | $84.12 | 5 |
| Dexcom, Inc. | $81.30 | 2 |
What the 2025 payments were for
- Food and Beverage$968.29 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 230 nurse practitioners in Charleston · All nurse practitioners in South Carolina